I doubt that. Look at the tweeter waveguides of center and bookshelf. Only if you put center horizontally you will have its dispersion equivalent to that of a bookshelf. AFAIK, the biggest problem of every center in existence is its proximity to the floor.

Actually, I think we agree - I was trying to say the same thing. The center should be placed horizontally, the bookshelf speakers vertically. If I was unclear on that, apologies

True, though the engineers at Revel are well aware that most center channel speakers end up in a cubbyhole or the equivalent (placed in an "entertainment center.") That said, they recommend making sure the speaker is not recessed (in other words, flush with the front of the cabinet) and stuffing the space with acoustic foam if at all possible.

That would work. Still best if you can fill the space with acoustic foam (or the like) behind the speaker.

The vast majority of people don't do this with their cabinet placed center speakers and are still happy with the results. However, if we are talking about "best practices," absorbing the interior of the mounting space is recommended

I'm pretty much set on replacing my Emotiva monoblocks with an ATI Signature amp this spring.
Looking at 2 options:
The 6002 2-channel 300wpc or a 4004 4-channel 200wpc and bi-amping.

I have Studio2s
Any thoughts, preferences?
Thanks

Boy, I don't consider myself an expert on amps - others in this thread can probably comment more specifically on those models than I can. I am running my F208s currently with an Emotiva XPA3, at least some of the time, and it seems to be doing just fine. Not bi-amping.

I do know the Ultimas offer more difficult loads than the Performas, though. RichB and
@gsr
can probably answer more authoritatively. When I visited Mark Levinson back middle of November they were powering Salon2s off their integrated and their 532s, and it sounded very clean. Realize that ML is in a whole different league, price-wise. The Salon2s were not bi-amped either.

I can offer this statement from Kevin Voecks, re: bi-amping:

I too, have heard (positive) effects from passive bi-amping. If the speaker is competently designed, you would never want to insert active crossovers, except for a rare case in which the transfer function required to properly “cross-over” the speaker is published and properly implemented. Otherwise, passive bi-amping can offer sonic improvements. One reason is likely that the impedance outside the pass-band rises dramatically—thus resulting in the amp not being significantly utilized outside the intended frequency range. So for example, an amp dedicated to the high-frequency section of a speaker (whether that is a tweeter alone, or perhaps a tweeter and midrange), will not have significant current draw at low frequencies, resulting in lower distortion.

AFAIK, not even on the drawing board. Performa3 was new in 2014. Looking at past history, Revel does not often refresh a lineup in less than 7 or 8 years. Concerta2 was refreshed last year from the original series released in 2006. I would guess the next iteration of Performa is at least 3 to 4 years away.

When you have a speaker that to-this-day is still beating competition in double blind testing, there is not much reason to change something just for the sake of updating it